Control board for controlling and monitoring usage of water

Abstract

An electronic control board for supplying control signals including an activation signal to a controlled device in response to a detection signal created by a sensor comprises an on delay timer, a run timer, and an off delay timer. The on delay timer must time out before an activation signal is sent to the controlled device. The run timer permits activation of the controlled device during a run time interval. The off delay timer must time out before a subsequent detection signal will be permitted to generate an activation signal. A lockout timer prohibits generation of an activation signal if the number of activations exceeds a cycle limit. The control board further provides for shutting off the controlled device if the second detection signal occurs during the run time interval.

We claim:  
     
       1. An electronic control board for supplying control signals including an activation signal to a controlled device in response to a detection signal created by a sensor, comprising: 
       an on delay timer that must time out before an activation signal is sent to the controlled device;  
       a run timer which permits activation of the controlled device during a run time interval; and  
       an off delay timer that must time out before a subsequent detection signal will be permitted to generate an activation signal.  
     
     
       2. The control board of  claim 1  further comprising a window timer, a lockout timer which when running prohibits generation of an activation signal, a cycle limit and a cycle counter for counting the number of activations during a time window defined by the window timer, the cycle timer starting the lockout timer if the number of activations exceeds the cycle limit. 
     
     
       3. The control board of  claim 1  further comprising means for shutting off the controlled device if a second detection signal occurs during the run time interval.